/*
** Copyright (C) 2009 Joshua Brent Marsh <joshua@icub3d.com>
**  
** This file is part of icub3d-adt
**
** icub3d-adt is free sofware; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 3 of the License, or
** (at your option) any later version.
**  
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
**  
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
**  
*/

/* $Id$ */

#ifndef ICUB3D_HEAP_H
#define ICUB3D_HEAP_H 1

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "list.h"
#include "function_prototypes.h"
#include "tree.h"

typedef
struct heap
{
  List *roots;
  comp_func *comp;
  size_t size;
  struct list_node *min;
  struct list_node **degrees;
} Heap;

Heap * heap_create (comp_func *comp);
void heap_destroy (Heap *heap, destroy_func dfunc, int nodes);

#define heap_size(h) (h)->size
int heap_insert (Heap *heap, void *item);

void * heap_find_min (Heap *heap);
void * heap_extract_min (Heap *heap);

#endif /* ICUB3D_HEAP_H */
